Electric speed-regulator



(No Model.)

0. W. LARSON. BLEGTRI'U SPEED REGULATOR.

No. 549,874. Patented Nov. 12,1895.

( a/fl W 441.50 71 AN UREW B.GRAHAM. PHOTO-LITNQWASHI NGIDILD C.

UNITED STATES PATENT OFFICE.

CARL IV. LARSON, OF SCHENECTADY, NEWV YORK, ASSIGNOR OF ONE-HALF TO \VALTER N. SIIEAFF, OF LYNN, AND AMOND U. JAASTED, OF BOSTON, ilIASSAOI-IUSETTS.

ELECTRIC SPEED-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 549,874, dated November 12, 1895.

Application filed April 8, 1895. Serial No. 544,989. (No model.)

To all whom it may concern: and secured to the fixed supports E E, form- Be it known that I, CARL IV. LARsoN, a inggimbals andproviding for universalmove subject of the King of Norway and Sweden, ment of the governor and parts attached g residing at Schenectady, in the county of thereto. A suitable counterweight 6 extends 5 5 Schenectady and State of New York, have downward between the supports EEand will invented certain new and useful Improvekeep the governor A always in vertical posiments in Electric Speed-Regulators, of which tion. the following is a description, reference being Suitable driving mechanism for the goverhad to the accompanying drawings, and to normay, as shown, comprise abevel-gear a, 6o

the letters and figures of reference marked meshing with the gear a and mounted upon thereon. a shaft f, carried in suitable bearings in stand My invention relates to improvements in ard F, which is fixed to the base B of the govengine-governors, which, while capable of ernor inside of the frame D. A correspondwide application, is intended more particuing shaft f, normally in line with shaft f, is

I 5 larly for that class of governors designed to mounted in bearings at the extremity of an be applied to marine engines, or in any posiarm G, extending from or moving with the tion or for any use involving a moving supfixed supports E E. An extensible univerportfor the mechanism to be controlled. The sal joint II connects the shaft ff, and the characteristic features of novelty comprise latter is provided with a pulley I, to which ro- 20 the combination, with a centrifugal governor tation is imparted to drive the governor by a sustained in bearings which permit it to mainbelt 2', sprocket-chain, gears, or the like, contain a vertical position unaffected by movenected with some suitable part of the engine ment of its support, of a series of electromagin the ordinary manner. nets the circuits of which are controlled by It willbe apparent that when arranged sub- 7 5 2 5 the governor, and an armature in the field of stantially as just described the governor will the said magnets and connected to and arremain vertical and respond to the variations ranged to operate controlling parts of the enin speed of its engine through a wide range gine or machine the operation of which is to of change of position. be regulatedas, for instance, the throttle- J, Figs. 1 and 2, is the stem of a throttle- 0 valve or the links. valve, to which is affixed the armature-lever An important application of the invention K, the outer end of which is of magnetic is the prevention of injurious racing in mametal and preferably formed with a recess 7;. rine engines when through the pitching of L is a bar curved to the radius of the path the vessel the propeller is lifted out of the of the lever K and is of insulating or insu- 3 5 water. Other uses will suggest themselves. lated material.

In the accompanying drawings, Figure 1 Anydesirednumber of separate electromagshows the governor, its supports, and drivnets, five onlybeing shown, Z Z Z Z Z are seing mechanism in elevation; also the electrocured to the bar L in such proximity that magnets and their circuits in diagram. Fig. the attractive force of one magnet when fully 40 2 is an elevation, partly in section, on the magnetized will be sufficient to draw the arline 2 2 of Fig. 1. Fig. 3 is a diagrammatic mature into its field when its immediate view of the electromagnets and their armaneighbor is demagnetized, thereby moving to ture as applied to the operation of valve-conthe desired extent the controlling part of the trolling links. engine to whichitis attached. Asillustrated, 5

45 As seen in Fig. 1, A is a centrifugal goverthe cores of the electromagnets are sufficiently nor of any well-known type, provided in this shorter than the recess k to pass freely thereinstance with a bevel-gear a and mounted in through, allowing the ends of said recess to the frame B, which is carried on oppositelyextend up in front of the poles of said magplaced pins 0 O, fixed to an exterior frame nets to close the magnetic circuit. I do o D, which is in turn similarly mounted on pins not, however, confine myself to the details of (l (I, placed at right angles to the pins 0 O the construction shown, as many substantial equivalents will suggest themselves to the electrician, should change in form be necessary or desirable.

The electromagnets Z, &c., are wound with magnetizing-coils M, the inner ends of which are all connected to a common return N, which is represented on the switchboard O, alsocarried by and moving with the frame which supports the governor by contact n, connected to the negative side of the supply-circuit. Conductors 1 2 3 4 5, connected to the outer terminals of successive magnetizing-coils M, lead to the contacts O O O O on the said switchboard. A pivoted lever P, itself connected to the other side of the supply-circuit, is arranged to make contact with the terminals on the switchboard and is connected to the vertically-niovin g part of the governor A by link P, the governor and switchboard being in fixed relation. As the balls of the governor move in or out, according to variations of speed, the link will move the lever I onto or away from the contacts 0, &c., and if, for example, the speed be progressively increased beyond the maximum for which the governor is set the lever P will be moved progressively, closing the circuit of one magnet after the other and opening the circuit of the one just passed. This will re sult in moving the armature K from in front of one magnet to the next to suitably adjust the position of the block Q in the link R, Fig. 3, or close or partly close the throttle T, Fig. l, and vice versa.

The above-described construction may be modified by those skilled in the art to meet special conditions of structure or location without departing from the invention.

Having described. my invention, what I claim is 1. The combination with an engine, of a counterbalanced governor therefor mounted in universally moving bearings upon a fixed support, yielding power connections between the engine and the governor, and means actuated by the governor for controlling the speed or power of the engine.

2. The combination with an engine carried upon a movable or moving support, as a marine engine, of a counterbalanced governor mounted in universally moving bearings upon supports in fixed relation to its engine, yielding power connections between the engine and governor, a series of electro magnets, an armature therefor, means for controlling the engine connected to the armature, and a switch lever actuated by the governor to open and close the circuits of the electro magnets and vary the position of the armature in accordance with the movements of the governor.

3. The combination with a marine engine, of a counterbalanced governor mounted in universally moving bearings upon a fixed support, and flexible and extensible power connections between the engine and governor.

at. The combination with a marine engine, of a counterbalanced governor mounted in universally moving bearings upon a fixed sup port, and yielding power connection s between the engine and governor.

5. In combination, an engine, an armature lever connected with a controlling part thereof, a series of electro magnets arranged in the path of said armature, a switch board having insulated terminals, circuit connections between each electro magnet and the switchboard terminals, a switch lever adapted to engage the terminals on the switchboard and connected to a source of current a counterbalanced speed governor for the engine, and connections between the governor and switch lever.

In testimony whereof 1- hereto affix my si nature in presence of two witnesses.

CARL \V. LARSON. Witnesses:

O. G. HULTH, ERASTUS C. CLEIMSHIRE. 

